NP swab* and BAL test results performed within 7 days
| Frequency | BAL result | |||
| Positive | Negative | Total | ||
| NP swab result | Positive | 5 | 0 | 5 |
| Negative | 1 | 36 | 37 | |
| Total | 6 | 36 | 42 | |
*NP swabs collected closest to BAL were used for the analysis.
BAL, bronchoalveolar lavage; NP, nasopharyngeal.